Is this a bug in Flash's TransitionManager Class?

Hi,

Not sure whether this is a bug in Flash AS3's TransitionManager class, or I'm missing something here which is preventing me from accomplishing some effect.

Frame 1.
- circle movie clip is on stage.
- debug dynamic text called "output" is on stage.
- script as per snippet below, which basically fades the circle in, issuing "done" to the output text when done, and forwarding the playhead to Frame 2.

Frame 2 - 20.
- circle is tweened (via timeline, not via script) from Frame 2 to 20, basically made skinny. Anim stops at Frame 20 (stop is issued on Frame 20).
- output dynamic text is on stage, and on entry in Frame 2, output.text is set to "tweening" so we know where we are.

Now, we should see the circle fade in, and then going skinny. Output text will correspondingly say "done" and "tweening".

What we actually see however, is circle fade in, and then remain unchanged. Output text does change from "done" to "tweening" - meaning Frames 2- 20 are playing, but the circle is not moving.

Is there some obscure thing I'm missing here?

I've included the fla file (just rename it from *.xls to *.fla after you download - EE won't accept *.fla files).

Feel free to suggest alternative means of accomplishing the fade in (e.g. using the TWEEN class - not sure how to use it) so that Frames 2-20 will actually work (i.e. circle will go skinny). Accomplishing Frames 2-20 via scripts is not really an option as this is a simplification of something more complex I'm trying to accomplish on the timeline.
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stop();
 
import fl.transitions.*;
import fl.transitions.easing.*;
 
var trans:TransitionManager = new TransitionManager(circle);
trans.addEventListener("allTransitionsInDone", forward);
trans.startTransition({type:Fade, direction:Transition.IN, duration:4, easing:Strong.easeOut});
 
//TransitionManager.start(smartTag, {type:Fade, direction:Transition.IN, duration:2, easing:Strong.easeOut});
 
function forward(e:Event):void
{
	output.text = "done";
	gotoAndPlay(2);
 
}